Nova Patents
US5437238A

Waist band attachment system

Claim Score by NHIP

Read claim 7, the broadest

Abstract

A continuous loop waist band (10) is placed in edge alignment with a garment body (11), and the garment parts are stretched about spindles (19, 20, 21 and 23). The spindles are moved away from one another so as to stretch the aligned edges of the garment parts. The edges of the garment parts tend to curl when stretched, and an edge decurler (84) removes the curl from the stretched garment parts as the edges approach the sewing machine needle (26). Edge guide (102) maintains the plies of material in overlying contact so as to make sure the curls do not reappear in the garment parts as the parts approach the sewing machine.

US5437238A, drawing sheet 1
Sheet 1 of 6

Term

Term ended

Expired 4 October 2010, 16 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

11 claims: 3 independent, 8 dependent

  1. 1
    A method of attaching an uninterrupted loop waist band to the waist edge of a shirt body of an approximately tubular garment comprising the steps of:placing the waist band about a plurality of support spindles with an edge of the waist band aligned with the sewing path of a sewing machine, placing the waist edge of the shirt body of the garment about the waist band with the edge of the shirt body substantially matched with the edge of the waist band and aligned with the sewing path, stretching the waist band and waist edge of the shirt body until both the waist band and waist edge of the shirt body are under tension, advancing the stretched waist band and the waist edge of the shirt body along the sewing path, applying a stream of air to the matched edges of the stretched shirt body and the waist band at a position along the sewing path upstream of the sewing needles in a direction that removes any curl from the matched edges and orients the matched edges in flat overlying relationship with one another as the waist band and shirt body move toward the sewing needles of the sewing machine, delaying the sewing function of the sewing machine until after the portion of the waist band and waist edge of the shirt body which have had the stream of air applied thereto have reached the needles of the sewing machine, and initiating the sewing function of the sewing machine to connect the matched edges of the waist band and shirt body together.
  2. 5
    A process of connecting edges of curled edge plies of tubular material comprising the steps of:placing an edge portion of one ply of material beneath a separator plate in alignment with a sewing machine, placing an edge portion of a second ply of material over the separator plate and in alignment with the sewing machine with the edge portions of the plies of material laterally matched with each other and in contact with each other on opposite sides of the separator plate, stretching the edge portions of the plies of material so that the edge portions tend to curl, advancing the stretched edge portions of the plies of material about the separator plate and through the sewing machine, uncurling any curl in the plies of material at the separator plate as the plies of material pass about the separator plate and toward the sewing machine, maintaining the uncurled plies of material in flat abutment with each other AS the plies of material approach the sewing machine, and initiating the sewing together of the edge portions of the plies of material after the plies of material have been stretched and uncurled and have been advanced to the sewing machine.
  3. 7
    Broadest claimClaim Score 58, broad(NHIP)An attachment for a sewing machine for guiding a stretchable loop waist band and the waist of a tubular garment part to the sewing machine comprising:guide spindles for holding the edges to be connected of the waist band and the tubular garment in side-by-side matched relationship in the sewing path of the sewing machine, drive means for moving the matched edges along the sewing path through the sewing machine, and decurling means positioned in the sewing path upstream of the sewing machine for removing curl from the matched edges of the waist band and the waist edge of the tubular garment as the matched edges move toward the sewing machine, means for delaying the operation of the sewing function of the sewing machine to sew the matched edges together until after the matched edges of the waist band and tubular garment part have been decurled by the decurling means and have been moved to the sewing machine.